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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: Oral Oncol. 2019 Nov 22;100:104475. doi: 10.1016/j.oraloncology.2019.104475

Figure 2. SEER database flow chart.

Figure 2.

18,395 cases of HNSCC were identified in SEER version 18. After filtering, 32 patients with confirmed multiple HPVmHNSCCs with at least one located in the oropharynx were identified. An additional 28 patients with HPVmHNSCC had a second tumor that was either HPV mediated or had unknown HPV status.